[997at]

Hi Guys. Putting everything back together after a complete CIS overhaul. Got the engine back in the car and am now reinstalling the clutch helper arm and omega spring. Got everything back on and set gap between the helper arm and the throw out lever. Tried the clutch and heard a metal to metal knock at the end point of clutch pedal release. The issue is that the omega spring is hitting the heat exchanger. Any easy fixes for this, or is this a sign of a tired omega spring? I could always just adjust the cable to put more tension on the spring to move it away from the exchanger except I noticed that the threads on my cable in this range of the adjustment are stripped. New cable time maybe? Clutch was operating fine before I took the engine out.
Another quick question. Why does the factory call for a 1mm gap between the release arm and the helper arm stop bolt? This just makes for a notchy feel at the top of the pedal push.Smoother just to set the gap to zero? Thanks for any advice.